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IDProjectCategoryView StatusDate SubmittedLast Update
0002225SpeedFanHardware supportpublic2014-02-20 23:212019-01-25 13:24
Assigned Toalfredo 
PlatformAsus Z87 GryphonOSWindowsOS Version7 64bits
Product Version4.49 
Target VersionFixed in Version4.50 
Summary0002225: Asus Z87 Gryphon (NCT6791D) not supported
Description(NCT6791D) not supported
- no MB temps
- no MB voltages
- no MB PWM
- no MB RPM
just processor, graphic card ans hard disk info are available.
Steps To Reproducealways
TagsNCT6791D, NCT7802Y
Motherboard ModelAsus Z87 Gryphon
Video Card ModelHD6950
Attached Filestxt file icon speedfan report Z87 gryphon C2.txt [^] (178,279 bytes) 2014-02-20 23:21 [Show Content]
jpg file icon speedfan Z87 gryphon C2.jpg [^] (63,376 bytes) 2014-02-20 23:23

- Relationships

-  Notes
youyoubart (reporter)
2014-05-03 18:32

In fact, NCT7802Y seems to be use to monitor voltage and control fan too.
youyoubart (reporter)
2014-05-03 18:38

In this thread about NCT6791D support for linux [^]

they explain that the "nct6775" driver is compatible with NCT6791D chip.

and they had: > But i don't understand why there is also the NCT7802 chip
the answer: The board supports up to seven fans, so they need more than one chip
to monitor and control all those fans. Good news is that it suggests that
ASUS may move away from the idea of using multiplexers to switch between
youyoubart (reporter)
2014-05-03 18:52

Another explain about haow this chip work [^]
youyoubart (reporter)
2014-08-08 19:38

test of 4.50 beta2.
no change in Temp information or Fan control for me.
Report send with the software.
alfredo (manager)
2014-08-08 19:58

I am working on this and will soon release a fix. I am working on a new beta. Please send an email to alfredo [at] and I will send you a private beta.
youyoubart (reporter)
2014-08-09 10:25

Thanks Alfredo to follow this case.
Truga (reporter)
2014-08-13 16:04

Hi, I'm having this same issue. Is there any ETA on the next beta?
alfredo (manager)
2014-08-13 17:45

If you send me an email referencing this issue I will send you the latest beta.
youyoubart (reporter)
2014-08-13 18:14

When, do you think, can send us the latest beta Alfredo?
alfredo (manager)
2014-08-13 18:31

The NCT6791D is now fully supported by the development beta. You can get a preview by contacting me by email.
What I cannot find is the NCT7802Y on this motherboard :-(
youyoubart (reporter)
2014-08-13 23:36

Thank alfredo for the progress.
Fan control fully work.i can controle independently and on all the range of rpm for all the 5fans.
Temp sensor is wrong.
For rpm sensor. 4/5fans indicate right rpm. For the last fan, when it rise to 100% and all other to 0%. All fans rise up from 0 rpm to 255rpm.strange.
Truga (reporter)
2014-08-18 10:29
edited on: 2014-08-18 10:30

I set my fans up now, and they work great for me too (I have a Z87-A). I have the same thing with the last fan.

The CPU temp seems correct, but it doesn't use the digital sensor that reacts to core temps instantly, which is good for me as my fans kept spinning up and down with the AI Suite 3 due to that.

The individual core temps seem to be all over the place (i.e. not working).

alfredo (manager)
2014-08-19 09:28

Hello Truga, which beta did you test? Individual CPU Core Temperatures should be reporting fine now.

- Issue History
Date Modified Username Field Change
2014-02-20 23:21 youyoubart New Issue
2014-02-20 23:21 youyoubart Status new => assigned
2014-02-20 23:21 youyoubart Assigned To => alfredo
2014-02-20 23:21 youyoubart File Added: speedfan report Z87 gryphon C2.txt
2014-02-20 23:22 youyoubart Tag Attached: NCT6791D
2014-02-20 23:23 youyoubart File Added: speedfan Z87 gryphon C2.jpg
2014-05-03 18:31 youyoubart Tag Attached: NCT7802Y
2014-05-03 18:32 youyoubart Note Added: 0007387
2014-05-03 18:38 youyoubart Note Added: 0007388
2014-05-03 18:52 youyoubart Note Added: 0007389
2014-08-08 19:38 youyoubart Note Added: 0007420
2014-08-08 19:55 alfredo Status assigned => acknowledged
2014-08-08 19:58 alfredo Note Added: 0007421
2014-08-09 10:25 youyoubart Note Added: 0007441
2014-08-13 16:04 Truga Note Added: 0007469
2014-08-13 17:45 alfredo Note Added: 0007470
2014-08-13 18:14 youyoubart Note Added: 0007471
2014-08-13 18:31 alfredo Note Added: 0007472
2014-08-13 23:36 youyoubart Note Added: 0007475
2014-08-18 10:29 Truga Note Added: 0007500
2014-08-18 10:30 Truga Note Edited: 0007500 View Revisions
2014-08-19 09:28 alfredo Note Added: 0007503
2014-08-19 13:03 alfredo Status acknowledged => resolved
2014-08-19 13:03 alfredo Fixed in Version => 4.50
2016-12-21 20:01 09876ggddzz Issue cloned: 0002585

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